Extreme 12x12 Binary Puzzle
Up for more 12x12 puzzles? This book offers 340 new challenges like this to solve offline.
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Ultimate challenge for experts
This extreme 12x12 binary puzzle is built for expert solvers only. The size of the grid and the difficulty level demand deep logical insight and long-term planning.
Comparable to the hardest Binairo and Takuzu puzzles, this is one of the most challenging puzzles available. Solve it online or print it to work on it gradually.
If you want something slightly less intense, the very hard 12x12 puzzle is a good alternative.
